TMP93CS44 datasheet(51/224 Pages) TOSHIBA

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TMP93CS44/S45

2004-02-10

93CS44-49

3.5

Functions of Ports

The TMP93CS44 has 62 bits for I/O ports. The TMP93CS45 has 44 bits for I/O ports because

Port 0, Port 1, P30, and P31 are dedicated pins for AD0 to AD7, AD8 to AD15 (or A8 to A15), RD ,

and WR .

These port pins have I/O functions for the built-in CPU and internal I/Os as well as

general-purpose I/O port functions. Table 3.5.1 lists the function of each port pin. Table 3.5.2

lists I/O registers and specification.

Table 3.5.1 Functions of Ports

(PU

= with programmable pull-up resistor)

Port Name

Pin Name

Number

Direction

Setting Unit

Pin Name for Built-in

Function

Port 0

P00 to P07

I/O

−

Bit

AD0 to AD7

Port 1

P10 to P17

I/O

−

Bit

AD8 to AD15/A8 to A15

Port 2

P20 to P27

I/O

Bit

A0 to A7/A16 to A23

P30

Output

−

(fixed)

P31

Output

−

(fixed)

P32

I/O

Bit

HWR

/SCK

P33

I/O

−

Bit

SO/SDA

P34

I/O

−

Bit

SI/SCL

Port 3

P35

I/O

−

Bit

INT0

P40

I/O

−

Bit

TI0/INT1

P41

I/O

−

Bit

TO3

P42

I/O

−

Bit

TI4/INT4

P43

I/O

−

Bit

TI5/INT5

P44

I/O

−

Bit

TO4

P45

I/O

−

Bit

TI6/INT6

P46

I/O

−

Bit

TI7/INT7

Port 4

P47

I/O

−

Bit

TO6

P50 to P52

Input

−

(fixed)

AN0 to AN2

P53

Input

−

(fixed)

AN3/ ADTRG

Port 5

P54 to P57

Input

−

(fixed)

AN4 to AN7

P60

I/O

Bit

TXD0

P61

I/O

Bit

RXD0

P62

I/O

Bit

SCLK0/

CTS

P63

I/O

Bit

TXD1

P64

I/O

Bit

RXD1

P65

I/O

Bit

SCLK1/

CTS

P66

I/O

−

Bit

XT1

Port 6

P67

I/O

−

Bit

XT2

P70

I/O

−

Bit

WAIT

(High current output)

Port 7

P71 to P77

I/O

−

Bit

(High current output)

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